K21 Pro is an innovation biometric fingerprint reader for Time & Attendance applications, offering unparalleled performance using an advances algorithm for reliability, precision and excellent matching speed. With SSR report(Self service Recorder)stored in the time clock.The 2.8 inch TFT can display more information vividly, including fingerprint image quality and verification including fingerprint image quality and verification result etc.TCP/Ip communication is standard and make sure the data transmission between terminal and PC can be easily done within several seconds, it is the best choice for small chain stores.